Holding device for the thread package supporting means on winding spindles



zxNDr-:L 2,338,832

E. HOLDING DEVICE FOR THE THREAD PACKAGE- SUPPORTING MEANS ON WINDING SPINDLES Filed 061'.. 20. 1941 Patented Jan. 11, 1944 HOLDING DEVICE FOR THE THREAD PACK- AGE SUPPORTING MEANS ON WINDING SPINDLES Ernst Zindel, Erlenbach, Zurich, Switzerland, as-

signor to Maschinenfabrik Schrer, Erlenbach,

Zurich, Switzerland Application October 20, 1941, Serial No.- 415,798 In Switzerland August 21, 1939 (Cl. 21M-13d) 7 Claims.

This invention relates to holding devices for the thread package supporting means on winding spindles.

The device according to the invention includes a holder for the thread package supporting means, which holder is arranged on the winding spindle and provides a xed axial stop for said supporting means, as well as a resilient stop member engaging with said supporting means circumferentially of the latter.

The thread package supporting means may constitute the winding member proper or a sleeve surrounding the Winding member. The holding device serves the purpose of giving to the thread package supporting means a suciently rm hold, for example in a Winding machine, so as to permit the winding operation to be eiected in perfect manner and the thread package supporting means to be readily exchanged. Furthermore, for certain purposes it is intended to provide for a limited amount oi transverse movement of the thread package supporting means in order to warrant alignment between the latter and the winding spindle and to facilitate cooperation of said supporting means with a winding feeler member with a view to saving the thread material, particularly if a iiat thread package supporting means, that is, a nat spool is to be wound.

In the holder according to this invention, due

to the direct elastic engagement of the annular spring on the spool or spindle, the spring conforms to the spool `or spindle inherently, thus not only positively centering the same but also serving to position it tightly in an axial direction 0n the holder so as thereby to impart a tight and correct retention thereto For this reason, this holder is also suitable for flat spools without modication.

In the accompanying drawingr two embodiments of the invention are illustrated the arrangements of which are particularly simple and which are thus available at a correspondingly lower price. In the drawing Fig. i is an axial section of a .first embodiment yoi the invention showing a fiat spool mounted in position of operation;

Fig. 2 is an axial section taken at right angles to Fig. l;

Fig. 3 is a cross section on tire line III-III in Fis. 1;

4 depicts an axial section of a second erncodiinent oi the invention with a spool spindle constituting the thread package supporting means;

Fig. 5 is a side elevation of the second embodiment when viewed at right angles to Fig. 4, and

Fig. 6 is a cross section along the line VI-VI in Fig. 4.

In the rst embodiment of the invention as shown in Figs. l to 3 the spool l has a flat barrel or shank and a base portion 2 which is also flat and provided at the outer end with a setback 3 which joins on the narrow sides of the base 2 with a curved projection 4 extending in the direction towards the shank of the spool. The base ci the ila-t spool is further provided on both of its wider sides or fiets with a longitudinal slot 5 the side walls of which extend perpendicularly to the flats. The numeral 6 designates a socket providing the holder and being adapted to be screwed on to the winding spindle 'l of a winding machine. The socket 5 has an inner shoulder 9 which represents a fixed stop for cooperation in the axial direction with the setback 3 of the fiat spool. Apart from this the socket (i is provided with two diametrically opposed longitudinal slots for guiding the at spool in the axial direction, the base of the dat spool being moved into engagement with the two slots 3i) when the spool is inserted in the socket E. In a circumferential groove 3l eX- tending transversely to the longitudinal slots 30 an annular spring 32 is arranged on the socket 6.

The annular spring 32 provides a resilient abutment for the circumference of the flat spool in the direction transversely of the flats or the spool. The side walls of the slots 35i of the socket E5 provide for a limited movement, that is, rocking movement for the spool, perpendicularly to the flats if the slots are properly dimensioned. The annular spring 32 acts upon the spool between the two projecting portions of the spool base 2 bounded by the curved surfaces i and the adjoining thickened end of the shank of the spool l by exerting pressure on the curved projections 4 of the spool base 2. In consequence thereof the setback 3 of the spool case 2 is resiliently lforced against the shoulder 9 of the socket E by the annular spring E2, whereby the spool is at the same time maintained axial bearing engagement with the socket 6 by the annular spring S2, so that the spool is secured against accidental axial displacement out of alignment with the holder. The annular spring 32 tends to retain the socket 6 in truly centered position within the socket ii by appropriately forcing the spool against the seat provided for the latter within the socket S by the shoulder which action of the spring Si is especially facilitated by the curved contour of the projections 4 of the spool base.

The holding device according to the invention permits the spool to be quickly inserted and removed manually with only slight exertion. When the spool is inserted or removed, the base is simply pushed or pulled through the spring retaining member which expands sufciently to permit passage.

The socket may be made in several constituent parts instead of consisting of a single piece. Further the axial guide provided on the socket for the spool may be effected in other manner than by means of slots.

In the second embodiment of the invention as shown in Figs. 4 to 6 the spool spindle l0 serving for receiving a supporting sleeve for a thread package is of round form and is connected by means of a stud l' and a cotter l with a cylindrical part 2" constituting the base of the spool spindle and having a front rim 2". The cylindrical part 2 of the spool spindle is inserted in a corresponding cylindrical bore 6 of the socket 6. The shoulder 9 of the socket 6 serves as an axially directed stop for the rear end of the spindle base part 2. This cylindrical base is provided with a cross pin 34 the ends of which projecting out of the base being conically tapered so as to form conical stop members 3d which in inserting the spool spindle in the socket are brought into engagement with the longitudinal slots of the socket. An annular spring 32 is arranged in a circumferential groove 3l in the socket 6 in the transverse direction to the longitudinal slots 3i? so as to exert pressure on the conical stop members 34 of the spool spindle base. The outer end of the base is provided with a cap piece 35 as a protection against foreign objects becoming caught in the slots 3i).

The annular spring 32 provides a lateral resilient abutment for the spool spindle which abutment can, however', be dispensed with if the requirement for a corresponding adjustability of the base 2' of the spool spindle held in the socket 6 is given up. In the instance shown the bore of the socket E receiving the cylindrical spool spindle base 2 has a somewhat larger diameter than the base 2', so that a correspondingly limited predetermined transverse movement of the spindle is possible. The annular spring 32 engages with the conical stop members 34 on its circumferential half facing towards the spindle base 2', thereby forcing said conical stop members inwardly, that is, in the direction towards the inner end of said base, so that the spindle base is resiliently urged towards the shoulder 9 of the socket 6. The annular spring 32 thus has the tendency to retain the spool spindle Il] in proper position of centering within the socket B, due to cooperation with the conical stop members 313.

In order to insert and to remove the spool spindle Il] it is only necessary to overcome the resistance opposed by the annular spring 32 beyond the inner ridge of which the stop members 34' project only a relatively short distance. This arrangement permits the ready insertion or removal of the spool spindle with but little efiort, so that the spool spindles can be quickly interchanged, which is particularly advantageous in connection with winding machines including several winding spindles.

For inserting or removing the spool shown in Figs. 4-6, the pin member 35 is removed and the base 2 is either inserted in or removed from the socket E whereupon, in ycase the spool is inserted,

the pin 34' is replaced and spring 32 then cooperates to hold the spool in proper position.

The spindle base may be flat instead of cylindrical particularly when it is required to insert ilat spools in the socket of the holding device. Alternatively the conical stop members projecting from the spool spindle base for cooperation with the annular spring may be provided by individual pieces sunk in the base of the spool or else the stop members may be integral with said base. The part of the second embodiment described above as forming the spindle base may, if desired, be an individual piece, that is, constitute an insert in the socket and thus serve for detachably mounting the thread package supporting means in position of operation.

I claim:

l. In a holding device for thread package supporting means on winding spindles of winding arrangements, conical projections provided on the circumference of said thread package supporting means, a holder for said thread package supporting means mounted on the associated winding spindle with its axis aligning with that of said spindle, a seat for said thread package supporting means arranged on said holder in xed relation to the latter for said supporting means to bear against in axial alignment with said holder, and an annular spring provided on said holder for cooperation with said conical projections, thereby tending to urge said supporting means into axial alignment with said holder and against said seat.

2. In a holding device for thread package supporting means on winding spindles of winding arrangements, conical projections provided on the circumference of said thread package supporting means and tapering outwardly away from said means, a holder for said thread package supporting means mounted on the associated winding spindle with its axis aligning with that of said spindle, a seat for said thread package supporting means arranged on said holder in a xed relation to the latter for said supporting means to bear against in axial alignment with said holder, and an annular spring provided on said holder for cooperation with said conical projections, thereby tending to urge said supporting means into axial alignment with said holder and against said seat.

3. In a holding device for thread package supporting means on winding spindles of winding arrangements, a holder for the thread package supporting means mounted on the associated winding spindle with its axis aligning with that of said spindle, said holder having a central recess conforming to the portion of said thread package supporting means received by said recess and having slot like recesses adjoining said central recess, conical projections provided on the circumference of said thread package supporting means and being received by said slot like recesses, a seat for said thread package supporting means arranged on said holder in iixed relation to the latter for said supporting means to bear against in axial alignment with said holder, and an annular spring provided on said holder for cooperation with said conical projections, thereby tending to urge said supporting means into axial alignment with said holder and against said seat.

4. In a holding device for thread package supporting means on winding spindles of winding arrangements, a thread package supporting means having an engaging end providing a constituent part of said supporting means, conical projections provided on said engaging end, a holder for said thread package supporting means mounted on the associated winding spindle with its axis aligning with that of said spindle, said -holder having a central recess conforming to said engaging end, a seat for said thread package supporting means arranged on said holder in iixed relation to the latter for said supporting means to bear against in axial alignment with said holder, and an annular spring provided on said holder for cooperation with said conical projections, thereby tending to urge said supporting means into axial alignment with said holder and against said seat.

5. Holding device for textile thread package supports comprising a socket formed of a rotary head having an axial opening therein, a stationary abutment in said opening, said head having a peripheral groove, an annular spring loosely displaced in said groove, and a package support having a 'base for insertion in said socket and having an inclined surface serving as an abutment against which said spring engages to resiliently press and hold the base into position against said stationary abutment.

6. Holding device for textile thread package supports comprising a socket formed of a rotary head having an axial opening therein, said socket having a stationary abutment for the support and being provided with longitudinal slots in its side Walls for guiding the base of the support, said head having a peripheral groove, an annular spring loosely displaced in said groove, and a package support having a base for insertion in said socket and having an inclined surface serving as an abutment against which said spring engages to resiliently press and hold the base into position against said stationary abutment.

7. Holding device for textile thread package supports comprising a socket formed of a rotary head having an axial opening therein, said socket having a stationary abutment for the support and being provided with longitudinal slots in its side walls for guiding the base of the support, said head having a peripheral groove, an annular spring loosely displaced in said groove, and a package support having a base for insertion in said socket and having outwardly tapered conical surfaces serving as abutments against which said spring engages to resiliently press and hold the base into position against said stationary abutment.

ERNST ZINDEL. 

